HPE StoreOnce Replication Services Test

StoreOnce replication is a concept that is used with VTL and NAS devices. These device types use a deduplication-enabled, low bandwidth transfer policy to replicate data from a device on a “replication source” StoreOnce Backup system to an equivalent device on another “replication target” StoreOnce Backup system. Replication provides a point-in-time “mirror” of the data on the source StoreOnce device at a target StoreOnce Backup system on another site; this enables quick recovery from a disaster that has resulted in the loss of both the original and backup versions of the data on the source site. If the Data Replication Service is faulty /stopped/not running, then, data replication may be indefinitely halted until the service is restored. If the replication is halted more frequently, then, the data stored in the Virtual Tape Libraries and the NAS Shares may not be in sync with the source leading to data inconsisitencies. To avoid such inconsistencies, it is essential to monitor the status of the replication service at all times. The HPE StoreOnce Replication Services Test helps administrators in this regard!

This test monitors each replication service on the target appliance and reports the overall status and health of the replication services. Besides, administrators can also keep track of the number of source and target jobs running in each replication service and find out the service with maximum load. This way, administrators can also figure out the level of activity on the replication service.

Target of the test : HPE StoreOnce Backup 4.x

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each replication service on the HPE StoreOnce Backup 4.x appliance being monitored.

Configurable parameters for the test
Parameters Description

Test Period

How often should the test be executed.

Host

The host for which the test is to be configured.

Port

The port at which the host is listening. By default, this is set to Null.

Username and Password

By default, the eG agent executes REST APIs on the target HPE StoreOnce Backup 4.x appliance to collect the required metrics. For the eG agent to execute the REST APIs, a special user with an Observer role is required. Specify the credentials of such a user in the Username and Password text boxes.

Confirm Password

Confirm the password by retyping it here.

Timeout Seconds

Specify the duration (in seconds) beyond which the test will timeout in this text box. The default value is 120 seconds.

DD Frequency

Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 4:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD frequency.

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Replication status

Indicates the current status of the replication service.

 

The values that this measure can report and their corresponding numeric values are tabulated below:

Measure Value Numeric Value
Online 1
Running 2
Non-Replicating 3
Unknown 4

Note:

By default, this measure reports the above-mentioned Measure Values while indicating the current status of the replication service. However, the graph of this measure will be represented using the corresponding numeric equivalents of the measure values as mentioned in the table above.

Health level

Indicates the overall health of the replication service.

 

The values that this measure can report and the states they indicate are tabulated below:

Measure Value Numeric Value
Unknown 0
Ok 1
Information 2
Warning 3
Critical 4

 

Note:

By default, this measure reports the above-mentioned Measure Values while indicating the overall health of the replication service. However, the graph of this measure will be represented using the corresponding numeric equivalents of the measure values as mentioned in the table above.

Detailed diagnosis of this measure provides the following details:Replication Name, Replication Serial, Minimum Protocol Version, Maximum Protocol Version, Maximum Source Jobs, Maximum Target Jobs, Maximum Target Appliances, Maximum Mapping per Library, and Maximum Source Appliances.

Is progress logging enabled?

Indicates whether/not Synchronisation Progress Logging is enabled for this replication service.

 

Synchronisation Progress Logging settings allow the system administrator to take snapshots of replication progress as log events and at fixed hourly points in order to get a historical view of progress that can be compared to previous days and weeks to check for changes in replication

completion time.

The values that this measure can report and the states they indicate are tabulated below:

Measure Value Numeric Value
Yes 1
No 2

 

Note:

By default, this measure reports the above-mentioned Measure Values while indicating whether/not Synchronisation Progress Logging is enabled. However, the graph of this measure will be represented using the corresponding numeric equivalents of the measure values as mentioned in the table above

Connected source appliances

Indicates the number of source appliances connected on this replication service.

Number

 

Source jobs

Indicates the total number of active source replication jobs running on this replication service.

Number

 

Source VTL jobs running

Indicates the number of source VTL jobs running on this replication service.

Number

 

Source NAS jobs running

Indicates the number of source NAS jobs running on this replication service.

Number

 

Target jobs

Indicates the total number of active target replication jobs running on this replication service.

Number

 

Target VTL jobs running

Indicates the number of target VTL jobs running on this replication service.

Number

 

Target NAS jobs running

Indicates the number of target NAS jobs running on this replication service.

Number